class List{
public static void main(String [] args)
{
ArrayList<String> listOfStrings = new ArrayList<String>();
String str = "Hello";
listOfStrings.add(str);
listOfStrings.add("felight");
listOfStrings.add(str+str);
System.out.println(listOfStrings.size());
System.out.println(listOfStrings.contains(1));
System.out.println(listOfStrings.contains("felight"));
System.out.println(listOfStrings.remove("Hello"));
System.out.println(listOfStrings.size());
}
}